Toyoscreen columns are based on the well-known Toyopearl polymers. The Toyopearl polymers are available in a range of different functionalisations for hydrophobic interaction chromatography (HIC), ion exchange chromatography (IEC), mixed mode chromatography (MX) and affinity chromatography (AFC). The particle size of these process materials ranges from 40-150µm and are available in the Toyoscreen column range as 1 and 5ml columns. These columns are suitable for method development on a small scale in order to scale up these methods to semi-preparative and preparative dimensions.